Fixed a bug in redirected contexts, version to 0.1.17

src/main/java/com/mojang/brigadier/CommandDispatcher.java

@@ -108,7 +108,7 @@ public class CommandDispatcher<S> {
                             if (next == null) {
                                 next = new ArrayList<>(1);
                             }
-                            next.add(child);
+                            next.add(child.copyFor(context.getSource()));
                         } else {
                             final Collection<S> results = modifier.apply(context);
                             if (!results.isEmpty()) {

src/main/java/com/mojang/brigadier/context/CommandContext.java

@@ -30,6 +30,9 @@ public class CommandContext<S> {
     }
 
     public CommandContext<S> copyFor(final S source) {
+        if (this.source == source) {
+            return this;
+        }
         return new CommandContext<>(source, input, arguments, command, nodes, range, child, modifier);
     }